<nz-radio-group [(ngModel)]="value" nzName="name">
  <label nz-radio [nzValue]="'a'">A</label>
  <label nz-radio [nzValue]="'b'">B</label>
  <label nz-radio [nzValue]="'c'">C</label>
  <label nz-radio [nzValue]="'d'">D</label>
</nz-radio-group>
